Nice example of a forum not playing the fare link-back
game with us too I see.
Anyway, I don't think the forum you mention does use the mod you linked.
The mod in phpBB.com outputs board tracker tags, the ones from the example forum uses local phpbb search feature.
Adding the tags in the meta keywords should no be hard, but it require the mod that does it. If you find it, please start a new topic
Then, to get back to the topic, have you noticed this thread is an archive ?
It's only meant to continue to provide some support for those still using the old version of the dynamic Meta tag mod, now released here : http://www.phpbb-seo.com/boards/phpbb-s ... -vt74.html
I advise you to first make sure you are using the last version, and then, to start a new thread if you need help.